Cercopithecus diana
Silhouette: Kai R. Caspar · PhyloPic
In 3 days ~90% in a week >90%
The Diana monkey (Cercopithecus diana) is an Old World monkey found in the high canopy forests in Sierra Leone, Liberia, and western Côte d'Ivoire Named for its white brow, which is said to resemble the bow of the Roman goddess Diana, this black-grey guenon has a white throat, crescent-shaped browband, ruff, and beard.
Two taxa formerly considered subspecies of the Diana monkey have recently been elevated to full species status; the Roloway monkey (C. roloway) is found in Côte d'Ivoire and Ghana, and the Dryas monkey (C. dryas) is found in the DR Congo.
This species can be found in West Africa, from Sierra Leone to Côte d'Ivoire. The Diana monkey is found in primary forests and does not thrive in secondary forests. The species is regarded as endangered by the IUCN, as well as by the United States Fish and Wildlife Service, the chief dangers to them being habitat destruction (they are now virtually confined to coastal areas) and hunting for bushmeat.
The Diana monkey ranges from 40 to 55 cm (16 to 22 in) in length, excluding its tail, which is of a uniform 3–4 cm diameter, and 50–75 cm (20–30 in) long. Adults weigh from... Wikipedia →
Call0:27
Ivory Coast · 2023
© Étienne Leroy · XC960202 · CC BY-NC-SA 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taï National Park | 🇨🇮 Ivory Coast |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | ZooParc de Beauval | 🇫🇷 France | |
| 2 | Ostrava Zoo | 🇨🇿 Czechia | |
| 3 | Tulsa Zoo | 🇺🇸 United States | |
| 4 | Novosibirsk Zoo | 🇷🇺 Russia | |
| 5 | Metro Richmond Zoo | 🇺🇸 United States | |
| 6 | Zoo de la Bourbansais | 🇫🇷 France | |
| 7 | Riverbanks Zoo | 🇺🇸 United States | |
| 8 | Lincoln Park Zoo | 🇺🇸 United States | |
| 9 | Le Cornelle | 🇮🇹 Italy | |
| 10 | Johor Zoo | 🇲🇾 Malaysia | |
| 11 | Golders Hill Park Zoo | 🇬🇧 United Kingdom | |
| 12 | Moscow Oceanarium | 🇷🇺 Russia |
Likely
About 50% of wildlife watchers report a Diana Monkey sighting in Taï National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 14 mammals we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
April
In that month about 60% of wildlife watchers report a Diana Monkey in Taï National Park on a given day, against about 20% in November, the lowest month. October and December–February have too few records to rate.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Diana Monkey sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Taï National Park, in our data
Taï National Park is the only park on Wallace's Line with enough records to rate Diana Monkey sightings: about 50% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Diana Monkey is recorded against all the mammals logged in Taï National Park (11 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
